Witheld CLI?

Set Flextel’s Call Notification feature and, each time you receive a call, you’ll get an automated email. The email indicates the FleXtel number called, the date and time of the call and the caller’s phone number (Calling Line Identity – CLI). What’s really neat is that where the caller’s number is withheld, FleXtel gives you the number minus the last three digits, to protect the privacy of the caller. If you know the caller’s number you can guess who’s called.